I installed the Ubuntu 12.10 and the driver for ATI Radeon HD 4330 (AMD Catalyst™ 12.6 Proprietary Linux x86 Display Driver) and the latest updates. After the restart now I can see only the desktop background and nothing more. No left or top panels. The resolution changed to 1024X768 and the graphic changed to: VESA:M92.

What happened? Is there something wrong with the driver? How can I solve this?